More pr template stuff

Author: RealCLanger

.github/pull_request_template.md

@@ -4,8 +4,8 @@
 2. A PR needs to refer to an issue in the project by adding the issue number in the last line of the PR body in the form of 'fixes #<Issue Number>
 3. When integrating a PR, please make sure you:
 - Create a merge commit when merging an OpenJDK upstream PR
-- Use Rebase & Merge when your PR contains only one commit with a commit message of the form `SapMachine #<Issue Number>: <Description>`
-- Use Squash and Merge when there are several commits on the PR. Update the commit message to `SapMachine #<Issue Number>: <Description>` and remove commit messages from sub-commits
+- Use Rebase & Merge when your PR only contains commits with meaningful commit message, e.g. of the form `SapMachine #<Issue Number>: <Description>` for SapMachine specific changes or the original commit messages for cherry-picks from OpenJDK
+- Use Squash and Merge when there are several commits on the PR. Update the commit message to `SapMachine #<Issue Number>: <Description>` and remove unnecessary commit messages from sub-commits
  -->
 
 <!-- Replace the following line with a description of this pull request -->